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I've used a 30-ton press before. Support the ends of the gate on large blocks of wood with the bow upward and press down in the middle. I have had to go a little past the sweet spot before since as you let up on the pressure from the press it wants to spring back some. I strapped the gate to the blocks of wood on either end so it couldn't tip since I was only pushing on the top edge, too.
I've used a 30-ton press before. Support the ends of the gate on large blocks of wood with the bow upward and press down in the middle. I have had to go a little past the sweet spot before since as you let up on the pressure from the press it wants to spring back some. I strapped the gate to the blocks of wood on either end so it couldn't tip since I was only pushing on the top edge, too.
The word "tube" you are using is suggesting to me that you have a Flareside tailgate. Chad's idea is good however, I would consider slipping another bar of metal inside your "tube" as a snug fit. This second tube will help prevent kinking the tailgate tube when pressing down on it.
The used gate I got for my 81 flare side also had a bow.
I placed the gate on the floor and used 2x4's at either end and "I" was able to "bounce" (250+ lb) a little in the center to get it flat.
I also had a long level to check if it was flat or needed a little more "bounce".
Its working for me.
I don't thing this could be done to a style side gate.
Dave ----
The used gate I got for my 81 flare side also had a bow.
I placed the gate on the floor and used 2x4's at either end and "I" was able to "bounce" (250+ lb) a little in the center to get it flat.
I also had a long level to check if it was flat or needed a little more "bounce".
Its working for me.
I don't thing this could be done to a style side gate.
Dave ----
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